refers to the size or strength of the force

(a)  

points to where the object goes

(a)  

Applied, friction, normal and tensional forces are examples of (a)   forces.

Gravitational and magnetic forces are examples of (a)   forces.

(a)   are forces that are equal in magnitude but opposite in direction.

(a)   are forces that cause a change in the motion of an object.

The sum of all forces acting in an object is called (a)   .

If the forces in an object are balanced, the net force is (a)   .